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经营范围
发明名称
Exercise bicycle
摘要
An exercise bicycle including a body that supports a seat and handle bars. Supported by the body is a crank assembly. The crank assembly includes a shaft and crank arm that are variable in length.
申请公布号
US2012065028(A1)
申请公布日期
2012.03.15
申请号
US201113136947
申请日期
2011.08.15
申请人
GRAY DAVID
发明人
GRAY DAVID
分类号
A63B69/16
主分类号
A63B69/16
代理机构
代理人
主权项
地址
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